Hydraulic elevator.



No. 844,488. PATENTED FEB. 19, 1907.

W. L. WEBER. HYDRAULIC ELEVATOR,

APPLICATION FILED OCT. 5, 1906.

WTA/ESSES WVEN TUB l V/AA/AM L. W550? 75W UNITED STATES PATENT OFFICE.

WILLIAM L. WEBER, OF BOSTON, MASSACHUSETTS, ASSIGN OR TO GREENE, 'TWEEDAND COMPANY, OF. NEW YORK, N. Y., A CORPORATION OF NEW YORK.

' HYDRAULIC ELEVATOR.-

Patented Feb. 19, 1907.

Application filed October 5,1906. Serial No. 837,598.

"T all whom it may concern.-

Be it known that I, .WILLIAM L'. WEBER, of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Hydraulic Elevators, of which the following is aspecification. This invention relates to hydraulic elevators.

In particular, it' relates to that t e of elevatol in which the car issupport upon a long piston or plunger which travels in a cylinder sunkin the earth, the plun er being forced upward and out of the cy inder tocarry the car to an desired height by forcing water into the cy inderand the car being lowered to any desired level by allowing water to flowthrough the outlet from the cylinder until the plunger sinks to thedesired level. In elevators of this type the water is forced in underconsiderable pressure, and the packing for the plunger at the mouth ofthe cylinder is correspondingly tight, and difficulty is experienced inkeeping the plunger suitably lubricated for its passage through thepacking.-

' posit of oil on the plu The common method hitherto has been to causeoil to be smeared over the exterior of the plunger by aworkman by handor with the aid of an oil-can and when this has been rubbed away by thepacking or carried ofl by the water to repeat the operation. Anothermethod recently devised has provided a reservoir for oil surrounding theplunger, from which the oil is spread upon the surface of the plunger bydirect contact therewith, the plunger passing in and out through a bathof oil thus arranged ,or through a reservoir filled with absorbentmaterial holding oil, the absorbent oil-carrying material hearingdirectly against the plunger. Both of these methods provide for theconstant deer-surface, and I have found in experience t at no methodknown to me prior to the present invention has'been effective -todeliver the oil economically and without waste to various it issufficient if there parts of. the plunger surface. For example, beoccasionally'a deposit of a little'at the bottom, a little at the top,and other small deposits at various isolated points between, whence itis spread gradually by contact with the packing.

- The present invention aims to facilitate type described by providingmeans for making occasional deposits of a small body of oil at varyingplaces upon the surface throughpreferably located inthe gland-hea of thecylinder-packing, just above said packing;

and the invention also comprisesmeans to so govern the discharges thatalthough depos- 1ted upon the plun er outside of the cylindercept upon aportion of the plunger which'is certain to pass through the thus assurethe use and distri ution-of the oil so deposited, thus guardingagainstmaking deposits uneconomically in a location where they could notbe utilized conveniently, if at all. Y

tion and arrangement hereinafter given.

The accom anying drawings show one embodiment o the invention. V In thedrawings, Figure 1 represents a side arrangement and application of theinvention artly in diagram. Fig. 2 represents a detailin section, muchenlarged.

Referring to the drawings, 1 represents a cylinder set in the earth 2opening 3, through which water ma enter or be expelled. A plunger passest ough a packing 5 at the top of the cylinder and carries at its top acar 6, which may be guided in ways, as is customary, which are notrepresented in the drawings, as the are not necessary to a roperunderstanding of the invention. T e movement of the elevator iscontrolled in an here represents being a shipper-rope 7, which passes uthrough the car, where it may be graspe b the operator, and passes downto. the va for controllin theflow of water through the opening 3. daysort of mechanism for this the economical operation of elevators of thesuitable way, the means out the length of the plunger, and to this endpoint .of discharge. This discharge oint is pacln'ng no deposit shall bethus made exacking, and

Other features of the invention will be un derstood from the descriptionof construC- elevation .ofa plunger-elevator, showing the and having anve-operating mechanism purpose may be used, and this also forms nomounted on an arm 24, pivoted on shaft 21,

I the invi n the asking 5, the pipe in the inner end of said hole,containing a repp y-pipe 9 thus serving as a pinion w pin attached bythe clamp 28 to the shipper- .responding to the inactive movement ofthepart of the resent invention and is not shown in the drawings. Anoil-pipe 9 is provided to conduct a supply of oilto a point which ismost conveniently located above terminating in a holedri ed through thegland- 10, which holds the packing in place. A plug 11 is inserted cess12, in which is a ball 13 and a spring 14, which normally presses theball against the end of the passage communicating with the valve tomaintain-the discharge from said pipe closed except when overcome bypressure of cil within the pipe. When the pressure of the spring is thusovercome, oii escapes from the pipe, passes through the recess and ahole 8 in the plug,and is delivered therefrom upon the adjacent surfaceof the plunger 4. A reservoir 15, containing a suitable supply of oil,is provided at a convenient nearby location and is connected witha smallpump comprising a cylinder 16, in which a piston reciprocates, thecylinder having an inletvalve 18 from the reservcir and a discharge 19,communicating with the pipe 9. The piston is caused ,to reciprocate byits connection with an eccentric 20 on a shaft 21, which also carries atoothed pinion 22. A pawl 23,

has a reciprocating motion in position to engage the teeth of the pinionand to rotate the pinion when moving in one dil ectiOn, but to slipfreely over the teeth and not rotate the en the pawl is moving in theopposite direction. pawl-carrying arm 24 projects radially a convenientdistance and connects, by means of a rod 25, with one arm 26 of abell-crank, the other arm of which, 27, is connected with theshipper-rope 7. The last-named connection consists of a rope and ridingin a slot in the arm 27;

As the shipper-rope and the clamp thereon have a vertical travel ashererepresented, the pivct of the bell-crank will be horizontal, givingthe point of attachment between the. arm 26-and the radial and 24 ahorizontal movement to the right or to the left, as represented in thedrawings, movement to the' right correspondingstq thegactive movement ofthe pawl in engagementf vvith the ratchet on the pinion and movement tothe left corpawl and corresponding'also to the downward movement of theshipper-rope, which in common practice is the movement for starting thecar upward or for stopping the car after a downward movement thereof.This arrangement constitutes. one feature of tion, the purpose andeffect of which is to cause all deposits of oil on the .motion.

of the would be plunger-surface to be made at points where the samewill-be efiiciently utilized for relieving friction between the plungerand its packing 5. a

In operatien each time the shipper-rope is pulled downward the pawli's'retracted to the left, and each time the shipuer-rope is pulledupward the pawl is pushed forward to the right, thus actively rotatingthe toothed pinion to an extent corresponding to the This rotation ofthe pinion rotates extent the shaft 21 and to a correspondin i theattached piston inits.

advances action 0 cylinder to a corresponding extent. Dur ng a portionof the time while the piston is being raised it is drawin oil into itscylinder through the inlet-valve, but during the remaining-portion ofits motion it is forcing oil out from the cylinder, and owing to theautomatic closing of the inlet-valve this oil I is forced throu h outlet19 into pipe 9, and if that pipe be fulh'as it is in practice, acorrespondin amount is forced out at the delivery en of said pipe pastthe valve therelocated and is deposited upon Whatever part of thesurface of the plunger happens at that moment to be opposite the pointof delivery. The deposit is thus made at varying points of locationbetween the extreme limits of travel of the plunger-as, for example, ifthe shi per-rope be moved to stop the car atthe floor of a building orat the sixth floor the de' osit will be made upon a different part 0 theplunger'from that if the shipperrope be moved to stop the car at thesecond or the eighth floor-and it will be observed that this'deposit isindependent of the travel of the plun er, or non-synchronous therewith,depen ing wholly upon the movement shipper-rope or v employe forstopping or starting the car. As there is in practice always certainposition which'isthe lowest osition of the car, there is a certain depthw ich is the limit to which theplungerenters' its cylinder, and as thedelivery-' emt of oil shown in the drawings is-outsi e thecylinder-packing it is evident that any oil deposited when'the car is inits lowest position, asby movement of the shipper-r0 e to stop the carin said position, deposited outside the packing and would not be conveed'by the plunger to the packing a 'woul thus never serve to lubricateth passageof the plun er through the pac B the feature 0 the inventionpre "ously escribed' this uneconomical deposit of oilis avoided-namely,by arrang' ing the inactive movement of t e pawl synchronously with themotion of the shipperrope for stopping downward motion of the car, whichis in the samedirection as the mo tion for starting upward motion of thecar.

The arm 27 of the bell-crank-is preferably made adjustable in length,one portion other, as-ind'icated at 13-0,

and the other arm point, in which the pivot-pin for its connec- IOOother equivalent means tion to the rod may be clamped but it will beobvious that man variations in detail may be made within the scope ofthe invention, including the substitution of some other form of oilumpfrom that here shown or the connection of the pump to some other part ofthe control mechanism for starting or stopping the elevator-car. Themaintenance of the pipe 9 with a spring-closed delive nozzle permits alimite quantity of oil to e delivered directly on the surface where itis needed at various parts of the long elevatorplunger, thus givingall'parts occasional fresh ubrication, but without spreading oil thicklyover all parts or continuously applying same and without the labor ofadministermg this occasional deposit by hand. The amount deposited maybe regulated by regulating the.

travel of the pawl per stroke or by the use of any other suitablemechanical device, a number of which are known in the art.

I claim 1. A hydraulic elevator, comprising acylinder, a plunger, and apac between them, incombmation with contro means to start and stop theplunger, and an oil-reservoir having a dischar e upon the surface of theplunger controller? and operated by said plunger-control means.

2. A hydraulic elevator, com a cylinder, a plun er, and a pac betweenthem, in combination with control mechan ism moving in one direction tostart the plun- -thereby an oll-pum ger upward and'in the oppositedirection to start 1t downward, and an oil-reservoir havinga dischargefor lubricating the parts conments to start the car upward.

3. A hydraulic elevator, comprising a cylinder, a plunger, and a pacbetween them, in combination with contro means to start and stop theplunger, an oil-reservoir, a pump connected therewith, and connectionsom the 'pump to said plunger-controlling means, whereby movement of thelatter operates the pump, there being a discharge therefrom upon thesurface of the plunger.

4. A hydraulic elevator, comprising a cylinder, a pl er, and a packingbetween them, in cdiiiiination with a shipper-rope and mechanism forcontrolling motion of the plungelzr; a pawl-carrying lever actuated bythe s 'pper-rope; said pawl; a pinion engaged actuated by the pinion,there being a scharge from the oilpump u on the plunger-surface outsideof said pac a In testimony whereof I have afiixed my signature inpresence of two Witnesses.

WILLIAM L. WEBER.

Witnesses: M. E. MURPHY,

EVERETT E. KENT.

